Apparatus for producing fiber board



APPLICATION FILED 0012s. 1920.

M. CHEW. ARPARATUS FORTRODUCING FIBER BOARD.

Patented July 18, 1922.

" INVENTOR MANLEY CHEW. 8Y7) MARLEY cnnw, or MIDLAND, onrmuo, cannon.

s V rte;

measures For. Pnonucrne mane s'oean.

To all whom it may concern:

Be it known that I, MANLnY CHEW of the town of lllidland 'in the county of Apparatus for Producing Fibei j lipard, of I .l which the following is the specification.

hill

' My invention relates to certain new and ing steam pipes 2 containedin the bottom thereof. This container 1 is filled with chip waste by a suitable conveyor such as is frequently used in saw mills, then water is in troduced into the waste. The heat applied .to thesteain pipes serves to convert the wa ter into steam, which permeates the mass of waste.

The mass of waste is cooked from ten to twenty-four hours depending upon the nature thereof. The steam of course passes through the waste and softens and renders it pliable and workable, Water is then introduced into the mass and it is then. fed by any suitable means to a hopper 3 from whence it is conveyedby a endless chain of buckets t to a hopper 5 at the top of a heater 6, or seriesof heaters. lhe beater I use is the Clafiin beater, although other forms of heaters may be employed.

The water introduwd into the mass more or less floats the waste and converts it into a rough pulplikewatery'condition. In the heaters the mass is so treated that the fibers are separated into very fine. strands, shred- (led yet pulplike in form.

From the beater 6 the pulp is passed by a spout 7 to a spout 8 which conveys it into the cylindrical screening; machine 9, and into the cylindrical mesh screen 10 thereof. The pulp which passes thro conveyed b means of a pipe 11 to a receptacle 12 he pulp which does not pass I Specification of Letters Patent.

I Simeon, Province of Ontario, Canada, have invented certain new and useful Improvements in h the screen 10 is Patented July 18 119 22.

&pplication fil ed {October 23, 1920. Serial No. 419,050.

through the screen 10, that is, the tailings, pass through a pipe 13 to a ball or roller inillil t where it is rendered sufficiently fine to be fed bygthe pipe 15 to the feed-pipe 11.

Instead o ti'tlie beater 6, a ball or roller mill may be advantageously substituted.

. 16 is a cylindrical woven wire screen against which the pulp in the receptacle l2 impinges and 17 is a felt roll by which the pulp is carried off from the cylindrical screen in the form of long strips of fine shredded pulp. Water is again introduced by the pipes 18 and 19 to cause a free flow of the pulp on to and down the chute 20 into the vat 21,

From the'vat 21 a pipe 22 extends to the pump 23 whereby the pulp is elevated and pumped by a pipe 24: into the agitating tank 25 which contains aseries of rotary agitators 26 of any desired form such as shown in the drawing with paddles 27. a

By means of the rotary agitators the pulp is kept at a proper and uni orm consistency in the agitating tank or'vat 25. From the agitating tank the pulp is carried by means I of a pipe 27", pump 28 and pipe 29 into a boxlike receptacle 30 having an intermediate 7 bottom 30*. The pulp passes in a stream,

.in the course indicated by arrow, being interrupted in its flow by slats 31 on the intermediate bottom and slats 32011 the actual bottom. 'lhese slats form obstructions so as to caitch anyheavy foreign matter suchgas meta.

Alter thestream passes over the slats the 1 pulpy mass passes along and is precipitated or projected along down a chute of subst'antially a width corresponding to the length of the fiber board. The pulp is fed at such a speed as will induce the filmy mass of pulp to feed over the entire width of the chute in its passage-to the press,-33 which is preferably a hydraulic one. i

in the press the water is expressed from the pulp, and is formed up into a solid board.

From the press the boards are stacked into kilns and dried.

After being thoroughl dried they are treated with a waterproo ng liquid or corn- POSllZlGlL In describing my apparatus I desire it to be understood that I do not wish to limit myself to the exact types of machines forming the various parts of the apparatus as various changes may be made therein without departing from my invention.

What I claim as my invention is:

1. Apparatus for producing fiber board comprising a container means for moistening and'heating the chip waste therein, a beater, a conveyer between the container and beater, a screen, a chute extending between the beater and screen, a receptacle, v a chute between the screen and receptacle, acylindrical screen located. in the receptacle, a o e-acting felt mu cooperating therewith, a vat, a chute extending from the receptacle to the vat, an agitator, a pipe and pump between the vat and agitator, a final receptacle provided with cross slats located in the bottom, and a ipe line extending from the agitator to the nal' receptacle, apump located in the pipeline, and an inclined fiat chute leading from the final receptacle to the press. a

2. Apparatus for producing fiber board comprising a container, means for moistening and heating the chip waste therein, a beater, a conveyer between the container and beater, a screen, a chute extending between the beater and screen, a receptacle, a chute between the screen and receptacle, a cylindrical screen located in the receptacle,

iaaaeee a co-acting felt roll cooperatin therewith, a

3. In the apparatus escribed, a receptacle interposed betweenthe screen and the vat, a

cylindrical screen located in the receptacle, a felt roll located at one side in proximity to the top of the tank co-acting' with the screen and a chute leading from the vat to proximity' in which the roll is located and designed to carry off the mass from the roll.

4, In the apparatus described, a receptacle interposed between the screen and the vat, a cylindrical screen located in the receptacle, a felt roll located at one side in proximity to the top of thetank co-acting with the screen and a chute leading from the vat to proximity in which the roll is located and designed to carry off the mass from the roll, and water pipes extending on both sides of the felt roll.

:MANLEY CHEW. 

